Plane crash into North Austin building

The scene at the Echelon Office building in the 9400 block of Research Blvd Thursday morning.The remains of the plane lie on the northside of the building at bottom left as smoke still billows and the sprinkler system continues to spray water.

Investigators continue to survey the crash site Saturday afternoon and eventually removed the remains of the aircraft from inside the building. They scour the hillside looking for evidence and cleaning up to prepare to open the frontage road by Sunday morning.

Investigators continue to survey the crash site Saturday afternoon and eventually removed the remains of the aircraft from inside the building. On the thrid floor of the building in a corner of the burnout segment a United States of America flag sits on a stand in an office.

As investigators continue to survey the crash site Saturday afternoon and eventually removed the remains of the aircraft from inside the building curious onlookers take cell phone pictures as they drive by.

A firefighter looks at the building that was struck by a plane in north Austin on Thursday Feb. 18, 2010.

Investigators continue to survey the crash site Saturday afternoon and eventually removed the remains of the aircraft from inside the building. On the thrid floor of the building in a corner of the burnout segment a United States of America flag sits on a stand in an office.

Members of the FBI survey the scene of a plane crash in the 9400 block of Research Blvd., in Austin, Texas, on Thursday, February 18, 2010.

As investigators continue to survey the crash site Saturday afternoon and eventually removed the remains of the aircraft from inside the building curious onlookers take time to watch the action from across the highway.

The scene at the Echelon Office building in the 9400 block of Research Blvd Thursday morning. Investigators survey the remains of the plane on the northside of the building.

A trooper form the Texas Department of Public Safety directs traffic southbound along Research Blvd, as they past the scene of a plane crash in the 9400 block of Research Blvd., in Austin, Texas, on Thursday, February 18, 2010.

Investigators continue to survey the crash site Saturday afternoon and eventually removed the remains of the aircraft from inside the building. They scour the hillside looking for evidence and cleaning up to prepare to open the frontage road by Sunday morning.

The scene at the Echelon Office building in the 9400 block of Research Blvd Thursday morning. As the remains of the plane lie on the northside of the building as smoke still billows and the sprinkler system continues to spray water people line the sidewalk to look across Research and watch the action.

Investigators continue to survey the crash site Saturday afternoon and eventually removed the remains of the aircraft from inside the building. Investigators with the NTSB and FBI team survey the aircraft as a crane company operator uses hand signs to signal the driver to pull out the aircraft from inside the building.

Members of the NTSB and FBI invesitagtion team survey the aircraft before a crane company begins the process of puling the plane out of the building.

Investigators continue to survey the crash site Saturday afternoon and eventually removed the remains of the aircraft from inside the building. Members of the NTSB and FBI invesitagtion team survey the aircraft before a crane company begins the process of puling the plane out of the building.

Scene of a plane crash in the 9400 block of Research Blvd., in Austin, Texas, on Thursday, February 18, 2010.

Investigators continue to survey the crash site Saturday afternoon and eventually removed the remains of the aircraft from inside the building. A NTSB investigator looks over the body of the aircraft that is still inside the building.

A car with a crushed windshield is parked outside the building that was struck by a plane a plane in north Austin on Thursday Feb. 18, 2010.

Investigators continue to survey the crash site Saturday afternoon and eventually removed the remains of the aircraft from inside the building. Members of the NTSB and FBI investigation team survey the aircraft before a crane company, with workers at bottom, begins the process of puling the plane out of the building.

Scene of a plane crash in the 9400 block of Research Blvd., in Austin, Texas, on Thursday, February 18, 2010.

Scene of a plane crash in the 9400 block of Research Blvd., in Austin, Texas, on Thursday, February 18, 2010. left to right Art Acevedo, Mayor Lee Leffingwell, City manager Marc Ott, assistant chief David Carter, and fire chief Rhoda Mae Kerr.

A continuous stream of spectators get a view from across 183 at the destruction caused by a plane that was purposefully crash into the Echelon building. John Storms, far left pointing, came with his wife and daughters to see the spot just down the street from his workplace.

Authorities are investigating a reported plane crash into a seven-story office building in the 9400 block of Research Boulevard, according to Austin fire officials.

Officials APD Chief Art Acevedo, Special Agent in Charge Royce Curtin, Austin City Mayor Lee Leffingwell and Special Agent in Charge Rob Diaz, left to right, hold a joint press conference near the scene of Thursday's plane crash in Austin, Texas, on Friday, February 19, 2010.

Authorities are investigating a reported plane crash into a seven-story office building in the 9400 block of Research Boulevard, according to Austin fire officials.

Special Agent in Charge Rob Diaz, reads a statement during a joint press conference with the City of Austin officials near the scene of Thursday's plane crash in Austin, Texas, on Friday, February 19, 2010.

Traffic on U.S. 183 buzzes past the scene where a Piper Cherokee airplane crashed into a building in the 9400 block of Research Blvd Thursday in Austin, Texas, on Friday, February 19, 2010. The was plane deliberately crashed into the Northwest Austin office building that housed the Internal Revenue Service igniting a huge explosion. Two people were found dead.

Scene of a plane crash in the 9400 block of Research Blvd., in Austin, Texas, on Thursday, February 18, 2010.

Traffic on U.S. 183 buzzes past the scene where a Piper Cherokee airplane crashed into a building in the 9400 block of Research Blvd Thursday in Austin, Texas, on Friday, February 19, 2010. The was plane deliberately crashed into the Northwest Austin office building that housed the Internal Revenue Service igniting a huge explosion. Two people were found dead.

Investigators survey the scene for evidence around the burned out metal skeleton of a Piper Cherokee airplane in Austin, Texas, on Friday, February 19, 2010. The was plane was flown deliberately crashed into the Northwest Austin offic ebuilding that housed the Internal Revenue Service by Andrew Joseph Stack III igniting a huge explosion killing the pilot and one other person in the building.

Scene of a plane crash in the 9400 block of Research Blvd., in Austin, Texas, on Thursday, February 18, 2010.

Investigators survey the scene for evidence around the burned out metal skeleton of a Piper Cherokee airplane in Austin, Texas, on Friday, February 19, 2010. The was plane was flown deliberately crashed into the Northwest Austin offic ebuilding that housed the Internal Revenue Service by Andrew Joseph Stack III igniting a huge explosion killing the pilot and one other person in the building.

Scene of a plane crash from a vehicle on the highway in the 9400 block of Research Blvd., in Austin, Texas, on Thursday, February 18, 2010.

A steady flow of traffic heads southbound on Highway 183 in Northwest Austin past closed off frontage road, the scene where an airplane crashed into a building the day before in Austin, Texas, on Friday, February 19, 2010.

FBI Agent Royce Curtin speaks at a news conference near a building that was struck by a plane in north Austin on Thursday Feb. 18, 2010.

Austin Police Chief Art Aceved, left, and U.S. Congressman Michael McCaul, second from left, walk toward a news conference near a building that was struck by a plane in north Austin on Thursday Feb. 18, 2010.

Investigators combed the frontage road for evidence late into Thursday afternoon as firefighters search for remains on the second floor above where the airplane crashed into the building.

Officials have confirmed that the plane that hit the Echelon I building at the 9400 block of Research Boulevard belonged to Andrew Joseph Stack of Austin. Investigators combed the frontage road for evidence late into Thursday afternoon as firefighters search for remains on the second floor above where the airplane crashed into the building.

Authorities are investigating a reported plane crash into a seven-story office building in the 9400 block of Research Boulevard, according to Austin fire officials.

Debris that includes these window blinds dangles from the blownout windows in the facade of the Echelon II office building where a small airplane crashed into IRS offices in the morning of Thursday, February 18, 2010

Debris that appears to be an airplane wing dangles from a gaping hole in the facade of the Echelon II office building where a small airplane crashed into IRS offices in the morning of Thursday, February 18, 2010.

Photo of the view from the highway near where the plane crashed into an office building.

A firefighter looks at debris that appears to be an airplane wing dangling from a gaping hole in the facade of the Echelon II office building where a small airplane crashed into IRS offices in the morning of Thursday, February 18, 2010.

Investigators comb the frontage road for evidence late into Thursday afternoon. The remains of the airplane clings to the rock retaining wall of the building.

A curious photographer takes a photograph of the crash scene using a large format viewcamera. Officials have confirmed that the plane that hit the Echelon I building at the 9400 block of Research Boulevard belonged to Andrew Joseph Stack of Austin.

Officials from Austin walk past the scene of a plane crash in the 9400 block of Research Blvd., on their way to speak with members of the media in Austin, Texas, on Thursday, February 18, 2010.

The scene of the Echelon Office building in the 9400 block of Research Blvd Thursday morning. The remains of the plane lies on the northside of the building as smoke still billows and the sprinkler system continues to spray water.

Austin Fire Department's acting Battalion Chief, Capt., Glen O'Dell, walks past an plane debris as he surveys the scene of a plane crash in the 9400 block of Research Blvd., in Austin, Texas, on Thursday, February 18, 2010.